A Camp/Event can have multiple sessions. Once you have created a camp/event, you can add sessions to that camp using the 'Add New Session' option present on the Camp/Event Setup page. 

Access Path : Center Dashboard > Camp > Setup >  Camp/Event > Add New Session icon

Selecting the 'Add New Session' icon will take you to the 'Session Setup' page. The first section of the Session Setup page is Session Name and Description.

After the session name section, the next sections are Vendor selection and Session Details.

After the session details, the next section is Fee Setup.

You may have configured Early Bird Discount, Multi-Session Discount, and Sibling Discount at the camp level. 1Core offers you an option to configure session wise discounts also. You can configure discounts for each session.

You can add multiple add-on sessions for each session. To create an add-on session, select the 'New Add-On Session' button on the Add-On Session section. 

After filling in all the details, select the 'Save' button to save the session.