Dear teachers,

The modal verb..shall has two meanings as in:

A) Shall becomes would when it refers to the future ( changing to reported speech)
E.g.
"I shall tell them everything" ( direct speech)
I decided I would tell them everthing. ( reported speech)

B) Shall becomes should when it is a suggestion ( when changing to reported speech)
Shall we tell the manager?" ( direct)
She suggested that they should tell the manager. ( reported)

***I am confused as in whether it only applies to the subject pronoun I and We.

Can I apply the above usage to other subject pronouns such as he, she or they? E.g. "He shall lose weight."

Please advise... thanks sooooo much, teachers