You can set up unit types in the General Settings under Units by clicking Add Units.
After saving the unit type name, you can configure its settings and then add the actual units within that type by clicking Add New Unit or Add Multiple Units. In the right-hand panel, you can adjust the settings for each individual unit within that specific unit type.
Note: If a unit type contains only one unit (meaning the unit type is effectively that single unit), you still need to add that one unit to the unit type.
Once you enter the standard capacity, additional capacity fields will become available for input.
After completing all settings in Finish Editing Unit Type, click Save Unit Type.
You can later edit the unit type by going back to Unit Settings and clicking the edit (pencil) icon.
Once the unit type is set up, you can enter availability, prices, and restrictions in the Calendar under the relevant price lists. You can read more about this in the related article.