As an in home and remote computer tutor here in Honolulu Hawaii covering all of Oahu and the mainland U.S.A., I run across senior citizens with various physical challenges for which I must come up with a solution. Here's a way of dealing with problems using a touchpad and mouse....
Important Links for This Computer Tip
In Home, Onsite and Remote Cell Phone Tablet and Computer Lessons Training and Troubleshooting for Businesses and Senior Citizens For Honolulu Hawaii and All of Oahu Text or Call 808.224.0870 Mainland U.S.A. Text Only for Remote Lessons and Troubleshooting Due to Time Differences 
https://InHomeComputerHelp.com/
The Big Plain English Computer Cell Phone and Tablet Help and Tips eBook 
Senior Specialty In Home Computer Lessons and Computer Setup Oahu Call or Text 224-1870
https://www.InHomeComputerHelp.com/computerlessonsseniors/
Help is Now Available for Google Drive The Microsoft Office 365 Replacement and Gmail by Remote Computer Tutor and Troubleshooter J. Richard Kirkham B.Sc.
https://InHomeComputerHelp.com/googledrivehelp/
How to Keep Your Computer Files and Photos Safe in The 21st Century
EXACT USB Touchpad Recommended by Rick Kirkham for Computer Users with Dexterity Issues 
https://InHomeComputerHelp.com/touchpad/
Wireless keyboard/touchpad solution I use myself 
https://InHomeComputerHelp.com/wirelesskeyboardandtouchpad/
Voice Dictation Software to Help with Dexterity Issues 
https://InHomeComputerHelp.com/voicedictation/
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Thank you for your support!
Rick
J. Richard Kirkham B.Sc.
https://InHomeComputerHelp.com