1-You can find the number from a list on the screen and save it to the contract group in the app.For this you have to choose a contact group from home. Now you have to go to the app whose list requires you number. Now click on the floating action button and click on the search icon. And that list has to be selected. All the numbers in that list will be saved in your chosen contact group.
2-You can send an automatic message to your saved numbers. You just have to go to the home to do massage type and send it. Then you have to select all those contact groups and now the massage will automatically send.