Verb conjugation of "protagonizar" in Spanish

Open the Word Program (press 'Start' button at the bottom left of screen, choose the menu 'Programs'. In the Word document, once a white new document has appeared, press 'edit menu' again and paste the contents.
I have even met someone who invited me to come and visit. It was an older couple who were renting apartments for language students. Well, actually there are agencies that offer the same as this couple, but I'm open.
In school, we now are learning the grammar part, more specifically, the participles and so on. I understand it at all, but the conjugations, boy they are tough. A lot of patience is needed.