Control group is only accessed for motor capacity while the treatment group is accessed for motor performance. The participants who consented to follow therapist guidelines to work in daily environment will belong to treatment group. Which randomization technique will suite this study?
It really depends on further details and your study group's inclinations. If you have several potential covariates in mind and your targeted sample size is small, stratified randomization may be the way to go. A simple randomization strategy might be okay if the targeted sample size is large and if you think that there will be few covariates that can affect the results.
This quick reference might help: Article An overview of randomization techniques: An unbiased assessm...
The answer depends on the details of your study. For example https://app.studyrandomizer.com/about#what-is-permuted-block-body explains how you would set up a block randomization. If you are not sure how to proceed, I'd recommend to set up a plan for your study, and talk the plan though with a medical statistician.
