In case the user limit has been reached to invite new usersuser then the subscription can be upgraded from your end. Also in case there are users who are no more working with you and you want to decrease the number of subscriptions then you can degrade the number of user as well.
For this please confirm with the permission.
Then follow the following steps:
Step 1: Select Settings from the top info bar
Step 2: Select the Subscription and Billing option
Step 3: Select the Subscription option
Step 4: Click on the Upgrade Plan option.
Step 5: Choose your plan and add or reduce the number of users, as per your requirement.
Step 6: Click on the Review button.
Step 7: Select your preferred payment option(card or PayPal)
Step 8: Click on the “Pay Now” button.
Please Note: When you are reducing the number of users, you will be charged for the ongoing month and you will be paying less for the coming month.