Follow each step towards adding your co-founder to your companies cap table
Giving your co-founder full access to your company’s Pulley account.
Select Company under Essentials in the left navigation.
Then, click the “Add Admin” button at the right of the “ Admins” section and input their email. This gives them full access to your Pulley account.
Granting shares to your co-founder. (Follow this article for granting shares to your co-founder)