To add to what RogerM is pointing out, there are typically two ways that you would be recognized as the Toastmaster... Either you click on the sign up button in the agenda view screen or someone with edit rights would assign you to the role via the agenda edit dialog.
For you, pull up an agenda, and look for a button along the right side that corresponds to the Toastmaster role. Refresh the screen (click your browsers refresh button/icon), then you should find that the edit button shows up.
Since you say you are a fairly new club, I would suggest that you review our docs available on this support site.
Generally, how the work flow goes for agendas is something along the lines of (although different for different clubs):
1. VPED or Admin uses admin password to log in admin console and create/update a few basic agenda templates for reuse as a starting place for agendas. The templates can have some roles prefilled, such as the presiding officer or SAA. Should only need to do this once in a while, *not* for every meeting.
2. VPED or Admin creates one or more agendas corresponding to upcoming meeting dates. Some clubs create only the next one, some create a few, and some will create a whole years worth of agendas in advance.
3. If your club is doing role rotations or scheduling/assigning roles to people, then the TM (if assigned), VPED, or Admin would use the Edit Agenda dialog to assign any of those in advance of the meeting.
4. For the remainder of the meeting roles, usually one or more approaches (or a combination) is used. 1) People can go online after logging in as a member to sign up on the appropriate agenda (via the sign up buttons). 2) If your club uses the printed Meeting Sign Up sheet to get people signed up in advance of a meeting (sign up at a prior meeting), then someone will have to take that paper information and enter it in the agendas via the Edit Agenda dialog. 3) If you don't get everyone signed up by the meeting, you will have some blanks on the printed agenda... those can be written in at the meeting.
5. About a week before the meeting, it is a good idea to email out the upcoming meeting's agenda using the email agenda button. This serves as a reminder to members about open roles and also prompts members that have a schedule conflict to speak up and get the conflict resolved.
6. Shortly before the meeting, either the VPED or the TM would print the meeting agenda and a meeting sign up sheet (if you are using those). Again, some clubs only do online role sign up. Keep in mind that there is currently no "lock out period" before the meeting, so currently someone could still go on line and take (or drop) a role after the agenda is printed. I usually wait till the last minute to print for this reason.
That is the basics... Wash. Rinse. Repeat. Different clubs do it differently, though. Your mileage will vary.