This feature allows you to select specific days of the week for sending invite or follow-up/nurturing messages to your prospects. To set the days of your choice:
Go to Account Settings in the app.
Select the days you would like invites to send under the 'Invites' section.
Select the follow-up/nurturing message days under the 'Message' section.
Save all changes (by default, they are all currently selected and marked in blue).
