Yes. It should be physicians' seminar.
what topic do I need for seminar as an event management
It is important to evaluate a seminar to find out if it accomplished the purpose of the seminar. You also need to evaluate it so you can improve on the communication or the profit.
I am does not need an apostrophe. It is only when you make it into a contraction by dropping the a that you need the apostrophe. It becomes I'm in that situation.
do you need an apostrophe after the s in Koreans
No. The Cannons doesn't need an apostrophe.
No, Christmas Eve does not need an apostrophe.
No, because plurals do not need an apostrophe.
YOu will need to provide which seminar you are interested in before your question can be properly answered
No you don't! Horses does not need an apostrophe.
As a plural, for more than one dad; no, does not need an apostrophe. As a possessive, as in the item belonging to dad, then yes, it does need an apostrophe.
No. Harringtons doesn't need an apostrophe.
The plural "Thursdays" doesn't need an apostrophe.