Hi Rolaine
The standard Xerte Toolkits package doesn't have a facility for creating an automatic tick as learners visit pages. However as Eric hints at, there are lots of features in Xerte Toolkits that are really helpful for the learners you describe. You can see how the different page types can support different types of learners in the tutor guide at
vle.jisctechdis.ac.uk/xerte/play_487
Also, if you are installing the latest version of Xerte toolkits and clicking the HTML5 button when you publish you can use browser plugins like ChromeSpeak to support learners who have difficulties in reading. There is also a colour changer button to give a couple of colour and contrast options.
Another advantage with publishing to HTML5 is that learning objects can be viewed on the learner's own mobile phones. If this is important to you (or them) then it's worth creating some of your learning objects using the Website / Bootstrap template instead of the XOT template (you'll see this on the managment panel when you log in - see red highlight in attached image)