Work through one at a time. They complement each other there is no overlap. Finish one then start the other. Revisit as you please.
If you have reading glasses I recommend them. Most I know who have mulitfocal glasses usually own a pair of reading glasses or even some magnifying glasses for reading if it suits their vision. It's easier for longer term. As it's not only difficult peripherally it's also too small an area for comfortable longer term reading.
For the PhotoReading step use the imaginary X technique. When you have vision problems it becomes harder to see 3D images. Though I know someone who has great success seeing them with multifocal glasses. Not seen through the reading portion. So for PhotoReading she'd be set with Multifocals. For activation switch to reading glasses.
If you're using digital devices. Switch the text to a size that makes it easy to use the centre of multifocalsm for activation if you want to save switching glasses. For the PhotoReading step you can have it at its smallest setting.
Overall, you will need to test and see what works for you.
Alex
