Add-ons
Add-ons let you buy more of a specific thing without jumping a whole plan tier. They bill as extra line items on your existing subscription, prorate onto your current billing period, and take effect immediately.
Manage them on Billing → Add-ons (requires the billing.manage permission and an
active plan subscription — add-ons ride your plan's subscription, so Free workspaces
pick a plan first).
What you can add
Per-unit add-on prices are on aglyn.com/pricing, and what YOUR workspace would pay is shown in Billing before you confirm. This page covers what each add-on does and how it is billed; restating the numbers here would just be a second copy to keep in step.
| Add-on | What it does | How it is priced |
|---|---|---|
| Manager seats | Workspace manager seats beyond the included count | Per seat, per month — cheaper on higher plans |
| Collaborator seats | Per-site collaborator (teammate) seats beyond the included count | Per seat, per month — cheaper on higher plans |
| Extra datasets | Additional shared datasets across the workspace | Per dataset, per month — cheaper on higher plans |
| Extra sites | Publish more sites than your plan includes | Per site, per month — cheaper on higher plans |
| POS registers | One extra point-of-sale register, assigned to one site | Flat per register, per month — the same on every plan |
| Event Calendar | The event manager + calendar elements, workspace-wide | Flat per month — the same on every plan |
- Prices are per unit per month. On annual billing, add-ons bill yearly alongside your plan (12× the monthly price) — a subscription has one billing interval.
- POS registers also require a plan with POS (Pro and above), and each one is assigned to a specific site — see Assigning register seats.
- Collaborator seats work the same way as POS registers: bought once for the workspace, then assigned to a site — see Assigning collaborator seats.
- Event Calendar is a single workspace-wide toggle, not a per-site charge — see Events calendar.
Assigning register seats
Unlike every other add-on, a POS register seat is bought once for your workspace and then assigned to one site. Buying a seat does not raise the register limit everywhere — it adds one register's worth of capacity that you place where you need it.
Your plan already gives every site a register allowance on its own (Pro 1, Business 2, Advanced 5). A seat is added on top of that, for the one site you assign it to.
To assign one, go to Billing → POS register seats, directly under Plan add-ons. The card shows how many seats you've purchased, how many are assigned, and how many are unassigned, then lets you add or remove seats per site.
- Seats are reassignable. Moving a seat between sites is immediate and costs nothing — you're not buying or cancelling anything, just relocating capacity.
- Taking a seat off a busy site doesn't delete anything. If the site is running more registers than it can after the move, the extra ones stay set up but stop taking sales until you assign seats back or remove them. The console warns you before the move, with the number affected.
- Deleting a site returns its seats to the pool automatically, in the same action that removes the site. There's nothing to reclaim by hand.
- You need the Manage billing permission to move seats, the same permission that buys them.
If every purchased seat is already assigned and a site needs another register, either move a seat off a site that isn't using it, or buy another seat under Plan add-ons.
Assigning collaborator seats
Collaborator seats work exactly like register seats: a seat is bought once for your workspace and then assigned to one site. Buying a seat does not raise the collaborator limit on every site — it adds one site's worth of capacity that you place where you need it.
Your plan already gives every site a collaborator allowance on its own. A purchased seat is added on top of that, for the one site you assign it to, up to your plan's per-site maximum. Past that maximum, more seats can't raise the limit and the only path is a plan upgrade.
To assign one, go to Billing → Site collaborator seats, directly under Plan add-ons. The card shows how many seats you've purchased, how many are assigned, and how many are unassigned, then lets you add or remove seats per site. The same numbers appear on each site's own Collaborators card.
- Seats are reassignable. Moving a seat between sites is immediate and costs nothing — you're not buying or cancelling anything, just relocating capacity.
- Nobody is ever removed for being over the limit. If a site has more collaborators than its limit — because a seat moved, a plan changed, or the limit was corrected — everyone on it keeps their access and stays signed in. The only effect is that the site can't take on another collaborator until it's back under. The console warns you before a move that would leave a site over, with the number affected.
- Deleting a site returns its seats to the pool automatically, in the same action that removes the site. There's nothing to reclaim by hand.
- You need the Manage billing permission to move seats, the same permission that buys them.
If every purchased seat is already assigned and a site needs another collaborator, either move a seat off a site that isn't using it, or buy another seat under Plan add-ons.
How changes bill
- Adding or removing units shows a prorated preview of today's charge before you confirm, and takes effect immediately.
- Removing an add-on credits the unused time onto your next invoice.
Add-on changes are always immediate and always prorated, in both directions. Plan switches are not: since Aglyn moved to end-of-cycle downgrades, a plan downgrade waits for your period end and charges $0 today, while only a plan upgrade is immediate and prorated. Removing an add-on still credits you today. See when each change takes effect.
- Hard caps: seat and dataset add-ons stop at your plan's maximum (for example, Starter tops out at 5 workspace managers). Past the cap, the answer is a plan upgrade — the Billing page tells you when you're there.
Plan switches and cancellation
- Switching plans keeps your add-on quantities and re-prices them at the new plan's rates. If the new plan doesn't sell one of your add-ons, it's removed and the switch confirmation says so. On an upgrade this happens today, in the same prorated update as the plan change. On a downgrade it happens on the effective date along with the plan — your add-ons keep running, at your current plan's rates, for the rest of the period you already paid for.
- Canceling (or a subscription that dies after failed payments) ends your add-ons with the plan — they bill on that subscription, so entitlement enforcement stops counting them at the same moment the plan downgrades to Free.