For clients, do you have to sublicense? Print copy limits?

Hello,

If I’m a freelancer/small business working with clients, do I have to sublicense the items I make for them (made from Envato Elements)? Or does that technically automatically happen? Or do I have to do something special to achieve this sublicense?

Also, if I created for them a postcard or flyer that is meant for them to print out physical copies, are there a number of copy limits?

Are there limits on digital impressions for things like social media posts, videos, website templates?

Thanks, community!