Hi there, @DomenicaDiravia ...
This might not be the only way to do it, but here is one way that I've used for many years. In Windows, I search for the app (which comes installed with Windows) called "Character Map". In the "Search" box, I just type "charmap", and it comes up. Then, if I want to use a character with an accent, such as é, I can select it from the list, click the "Select" button and then the "Copy" button, and then I can paste it in to a text box...similar to what I did earlier in this sentence.
An alternative to inserting this character would be to hold the Alt key on your keyboard, and then press the number combination 0233 on the keypad as indicated at the bottom right corner. Then, let go of the Alt key...like this é.

Another way you could do this is by using something like Microsoft Word. When you are in Word, click on the "Insert" tab near the top left corner of the screen. Then, on the far right side of the ribbon of tools, click on the "Symbol" icon. Then, select "More Symbols...". Your "Font" can be set to "(normal text)", and your "Subset" can be set at "Basic Latin". Then, you can select a character and click the "Insert" button. This would insert the character in the Word document...which you could then copy and paste into the text box within Canvas...similar to this: á.

I hope these two options might be helpful to you in some way. Let members of the Community know if you have any questions along the way...thanks!