This is the pilot episode of the News Round The Clock (NRTC) English established to lecture our readers, audience and populace about the quintessence of impeccable vocabulary, word structure and grammar.
For the debut episode of NRTC English, the title is, ‘Madam, can I pay in instalments, not instalmentally?’

If you pay for something in instalments, you pay small sums of money at regular intervals over a period of time, rather than paying the whole amount at once. Instalmentally, therefore, is un-English.

You may have ordered (not ordered for) the goods (always written in the plural, like surroundings, headquarters, savings, premises, outskirts, rites, belongings, earnings) from a store. However, you may have also made an order for (as a noun) some stuff (not stuffs).

‘Stuff’ belongs to the same category of noncount nouns (like equipment, cutlery, information, advice, feedback, furniture, luggage, and damage). Adding ‘s’ to these nouns results in (not result to) ungrammaticality.
Finance experts have often emphasized (not emphasized on) bulk purchases of goods. Emphasize is directly followed by an object, without any intervening preposition. It belongs to the same category of verbs like leverage (not leverage on), demand, seek, solicit, and request (as verbs, they are never used with ‘for’). However, they can take ‘for’ when they are used as nouns, just like we can have ’emphasis on’ bulk purchases.

https://newsroundtheclock.com/nrtc-english-madam-can-i-pay-in-instalments-not-instalmentally/