The steps to use after parallel space apk download in phone are:
1. Open the parallel space and select the app that you want to run in it.
2. Once you select the app, a parallel space will be created for that app.
3. All the virtualized apps will appear on the recent screens of your android phone with the suffix ‘Parallel space’. And yes you are good to go. You can now multitask between the real and the virtualized version of the apps just like you are using two installations at once.
Read more- https://androclue.com/parallel-space-apk/