As the group leader/creator, you have the ability to invite others to your group. 

Keep in mind that this step may prove unnecessary if the group remains open, but those who selected the "hidden" privacy setting will need to send invites directly. 

Select the Menu button (three white lines) and click Groups to choose the group in question. 

Once selected, click the Leader Tools button and select Members. 

You will see "Member Invites" at the top of the page.

Users Without Edivate Accounts

If the user does not have an edivate account, simply enter the email address for each member you wish to invite in the first box. (You can enter multiple emails by separating them with a comma.)  

Then, click Send Invites to prompt the system to deliver an invite to the indicated email recipients.

Those invited can then follow the email prompt, log in, and join the group. 

Users with Edivate Accounts

If the person you wish to invite has an edivate account, you can also use the search bar below the text box.

Rather than list an email address, simply enter the user's name and select that person from the results. 

You can then click Send Invites to complete the process.