PowerPoint is a tool that allows us to present content in a meaningful way. Taking steps to build accessibility into your PowerPoint presentation as you go along will ensure that all individuals have equal and equivalent access to learning from your content with equivalent ease of use. It will also ensure that your presentations function and interact appropriately with assistive technology.
In Microsoft PowerPoint 365, you're able to access or permanently add an Accessibility tab to your toolbar so you can easily find and use accessibility tools (Figure 1).

Figure 1.
To temporarily access the Accessibility tab in PPT, select the Review tab and then select Check Accessibility. This will open both the accessibility checker and the Accessibility tab (Figure 2).

Figure 2.
To add Accessibility as a permanent tab, select the File tab and then Options at the bottom of the application (Figure 3).

Figure 3.