Normal meeting procedure includes that a motion proposed by one person should be seconded by another member. If a person proposes a motion and nobody seconds it, the chair is entitled to decline to put the motion up for a debate and a vote and to move on with the meeting agenda.
The point of seconding is to establish that at least one other person wants the motion to be put to the meeting. A seconder is usually someone who supports the motion this is not required. A seconder is just someone who believes the matter should be debated and voted on. This could be because the seconder thinks the issue should be put to a meeting to demonstrate its lack of support.
If the serial motion proposer has no seconder, the chair is entitled to refuse to put the matter on the agenda for the meeting.
BTW. Some time can be saved at meetings by dispensing with proposers and seconders for motions put on the agenda by the committee. If the committee has decided to put those motions on the agenda, it is obvious that at least two people supported the motion being put to the meeting.