Uploading each of your contacts individually might take you a while, so by creating an Excel or CSV spreadsheet you can upload them all in one go. Set each contact out in Excel as shown below - First name, Surname, Mobile number and add a Custom field if you'd like.
Once you've made your file you just need to:
- Select the ‘Groups’ tab
- Click on the 'Select a file' option and find the file you wish to add