When the APTS_EnableLightningCommunity admin entry is set to true, all users in an org are considered as Lightning Community users and are navigated to the Agreement Detail page after a user clicks New Agreement on an Opportunity.

When the admin entry is set to false, is not added, or has an invalid value, all users in an org are considered as Classic Community users and are navigated to Classic Community after a user clicks New Agreement on an Opportunity.