How to set minimum number of nights (minimum stay)?

You can set minimum number of nights in 2 ways on OTA Sync platform:

Compact - always the same for entire year - unchangable for specific dates but only for entire period
Daily - Add default value and later have possibility to change that value for any specific date

To add/edit compact value do this:

Go to Settings > Prices & Restrictions > Restricions
Add New Restriction of Type: Compact and adjust Minimum Stay
Edit the Pricing Plan you want to apply with this Restriction and down in Restrictions select restriction plan you just created.

To add/edit daily value do this:

Again first create restriction plan but now Type: Daily (or just use our default restriction plan that is automatically created)
Edit the Daily restriction plan and add default Minimum Stay

Now if you want to edit minimum stay for only specific days to be different than default values you should go to Calendar > Prices and Restrictions

Then choose date range you wish to update. Tab Restrictions. Restriction Plan to update. Expand Room Type Settings and enter minimum stay you want. Submit.

How do I set the maximum number of nights (max stay)?

How did the reservation for fewer nights than the minimum set up come in?

How do I change prices in the OTA Sync System?

How to create a pricing plan? (...and connect them with active OTA Channels)

How to set up LOS prices?