Help MikrE Pic mini 32MX534F

Hey good afternoon, Im just learning the PIC32 architecture for the first time and I am running to a lot of problems with the functions. I need to read received data from uart port 1 which is connected to pin rd3 and rd2 on the board which are shared with i2c and spi modules. I also need to transmit data through uart port 2 which has its own designated pin on the board. while debugging I figured that only uart port 2 was working and that uart port 1 which shared pins with other peripherals had to be declared some how in the function. i've seet the TRISD and PORTD registers to the values 0x04 for RD@ and 3 as inputs and outputs and found codes for similar devices that use
"PPSInput(2,U1RX,RD2); // Assign RPF4 as input pin for U1RX"
to declare the pins as inputs however I cant find how to do this with the device im using for uart port 1.
I need to some how designate the pins rd2 rd3 has uart port 1. Hers my code .

// GunDatatLogger
// Written November 2012
//UART1 is the input from device
//Uart2 is the monitor port - hyper term or linac service device
//RD2---->pin50------>RX
//RD3---->pin51------>TX

#include <plib.h>

void main()
{
const Insize = 80;
char StopChar[] = "\n";
char Output[Insize];

PORTD = 0x04;
TRISD = 0x04;

//PPSInput(2,U1RX,RPF4); //Assign RPF5 as input pin for U1RX
//PPSOutput(2,RPF5,U1TX); //Assign RPF4 as output pin for U1TX

UART_Set_Active(&UART1_Read, &UART1_Write, &UART1_Data_Ready, &UART1_Tx_Idle); // set UART1 active

UART1_Init(9600);
Delay_ms(1000);
UART2_Init(9600);
Delay_ms(1000);

UART2_Write(10);
UART2_Write(13);
UART2_Write_Text("MCU-Started"); // MCU present report
UART2_Write(10);
UART2_Write(13);
UART2_Write_Text("Data Log Started.");
UART2_Write(10);
UART2_Write(13);
Delay_ms(1000);


while (1)
{

if (!UART1_Data_Ready()) // Data ready bit must be set to 0 to meet condition
{
UART1_Read_Text(Output, "\0", 20);
UART2_Write_Text("1");
UART2_Write_Text(Output);

}
}
}
thank you