There are 2 ways to invite users:
If you send email invitations, you can control who you have invited to the community. When using a registration link, anyone with the link can register a user profile in your community.
You need to approve all users before they have access to the community when using a registration link.
You can send 2 types of invitations. Either let your members choose the role they want to join or predetermine that before sending the invitation. You can use the predetermined invitation if you know you are only inviting one type of members at that time. It is recommended to use the "Let members choose" option, since then you need only to use one link in all your communication.
Email invitation
Navigate to Manage > Invitations
Keep the "Let members choose" option active or choose the type of member you want to invite people as
Add the email addresses 1-by-1 or copy-paste a list of emails separated by comma or line break
After you are happy with your list, click invite
Invited people will get an email invitation which they can use to create a profile.
Note: If the user you invited already has a CrowdWorks profile, they will be automatically added to your user list.
Registration link
Navigate to manage > Invitations
Keep the "Let members choose" option active or choose the type of member you want to invite people as
Copy the link and share it with whom you want to invite
Approve the users to give them access to your community
After users have registered their profiles, you will need to approve them before they have access to the community. This is done in the "People" tab, where you can find the "Requests" section.
NOTE: If you share the link publicly online, anyone who finds it can register a profile in your community. This is why you need to go through the approval process before they have access to your community.
Remember, you can also remove users from your community by clicking the trashcan icon next to the user profile in the "People" tab.