Example: Karl needed a lot of time for the job.Allot means "to distribute between or among." It has the same root as lottery.
Example: He allotted three breaks a day to everyone in the department.Alot does not exist as a word.
Alright is a nonstandard abbreviation.
Spelling all right as two words is all right.
All Together or Altogether ?
All together means "together in a single group."
Altogether means "completely" or "in all."
Examples: We were able to walk all together.
There were ten of us altogether, counting Mr. Bemis.
He was altogether baffled by the question.