They live in the west and are asking about appropriate ways of calling people to Allah

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Check below answers in case you are looking for other related questions:
Which takes priority: calling non-Muslims to Islam or calling non-committed Muslims to become religiously committed?
He wants to specialize in calling Christians to Islam

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Related Answers:
Do not stop calling non-Muslims to Islam for fear that they may revile the religion
She is married to a Muslim and hijab is putting her off Islam
It is Not Essential for One to Declare One’s Islam Before Witnesses in Order for it To Be Valid
Which takes priority: calling non-Muslims to Islam or calling non-committed Muslims to become religiously committed?
He wants to specialize in calling Christians to Islam

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